MUSTARD MUFFIN VARIATIONS:Before spooning batter into muffin cups, you may add up to 1/2 cup of meat leftovers to these muffins. Crumbled crisply fried bacon, crumbled cooked spicy pork sausage, or crumbled and cooked sweet and spicy Italian sausage are all possibilities. Be sure to drain meat well before adding it to the batter or it may make the muffins soggy.